ST33TPHF20SPI datasheet(34/47 Pages) STMICROELECTRONICS

34 / 47 page

FIPS140-2 SECURITY POLICY

Page 34 of 47

NON-PROPRIETARY DOCUMENT

Services

Role

Keys and CSP access

W = write, O = output, Z = zeroize

C = used as key in cryptographic operation

R = read (and not used as C)

Authorized

in limited

approved

mode

110

TPM2_NV_Certify

W : 28, 38, 48

R : 25

C : 27, 28, 38, 48

Proprietary commands

111

TPM2_SetMode

W : 28, 38, 48

C : 27, 28, 38, 48

112

TPM2_SetCommandSet

W : 28, 38, 48

C : 27, 28, 38, 48

113

TPM2_RestoreEK

Z : 3, 7, 10, 14, 17, 18, 20

R : 42, 43

W : 23, 28, 38, 48

C : 27, 28, 38, 48

114

TPM2_SetCommandSetLock

W : 28, 38, 48

C : 27, 28, 38, 48

Misc commands

115

TPM2_PP_Commands

Non FIPS services

116

Field upgrade de-obfuscation1

3.2.2

Authorization

Some of the services listed above manipulate CSPs without requiring the operator to assume

an authorized role:



Services restricted to use of SHS:

TPM2_Hash,

TPM2_HashSequenceStart



Services using DRNG (read, state update without manipulation):

TPM2_GetRandom,

TPM2_StirRandom



Services used for authentication mechanism:

TPM2_StartAuthSession,

TPM2_PolicySigned,

TPM2_PolicyTicket,

TPM2_PolicyPCR,

TPM2_PolicyCounterTimer

TPM2_PolicyLocality,

TPM2_PolicyCpHash,

TPM2_PolicyNameHash,

TPM2_PolicyAuthorize,

TPM2_PolicyDuplicationSelect, TPM2_PolicyGetDigest



Services using (read, cryptographic operation) only public part of objects:

TPM2_ReadPublic,

TPM2_RSA_Encrypt,

TPM2_NV_ReadPublic



Specific services that do not affect security of the module:

TPM2_LoadExternal: loaded object not considered as protected object (specific

attribute).

TPM2_MakeCredential: convenience function that do not use TPM secrets.

TPM2_ECDH_KeyGen: ephemeral ECC key generation

1 This service is not callable from TPM interface but is only used internally by TPM2_FieldUpgradeData

command. It consists of de-obfuscating data received by the TPM2_FieldUpgradeData command with a

non-FIPS approved algorithm.

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